Ssl with a subdomain not working

I have a site funides.com and have a ssl certificate working
I have a subdomain democracia.funides.com and the ssl is not working. The site send me a 404 error.

https is redirecting me to http. If you want to test out https for that subdomain, set it to :grey: to make sure it’s working at your server. A 404 like that is often because the server is not properly configured for HTTPS at a website.